C9 Spool 500' 12" Spacing SPT-1, White Wire
C9 Spool 500' 12" Spacing SPT-1, White Wire

C9 Spool 500' 12" Spacing SPT-1, White Wire

Price: $170.22
Unit price  per 
SKU: C9-500-12-SPT1-W
Shipping calculated at checkout.


  • Purchase 500 LED or incandescent bulbs to fill every socket
  • Parallel wired, cut to fit
  • Plugs not included
  • 18 AWG wiring
  • Bulbs sold separately
Do not install more than 250 continuous feet of this Christmas light spool regardless of bulb type. That is the maximum line specification for 18 AWG wire. Please consult with a licensed electrician for assistance with installation.
Please consult with a licensed electrician for assistance with installation.

Total Length 500 feet Insulation Rating SPT-1
Color of Wire and Sockets White Wire Gauge 18 AWG
Number of Sockets 500 Lead Wire N/A
Socket Type C9, E17, Intermediate Tail Wire N/A
Socket Spacing 12 inches Voltage 120 V
Lit Length 499 feet Purchase Separately Incandescent or LED C9 Bulbs, Plugs (not included)
Maximum Cut Length 250 feet Bulbs Included No
Material PVC and Copper Warranty 90 Days of Normal Seasonal Use
Fuse Rating 10 Amp Additional Info 2 Weep Holes on Bottom of Socket
Usage Indoor/Outdoor Additional Info Make custom Christmas light cords by cutting to fit
Ratings CSA Rated Materials Additional Info Neither Male nor Female Plugs Included

For CA Residents: Prop 65 Notice

Warranty, shipping, and returns


All of our products are warranted for 90 days of normal, seasonal operation. See our Warranty policy page for more information.


January - July: Orders are shipped Monday - Thursday within 1-2 business days.

August - December: Orders are shipped Monday - Friday. See our Shipping status page to find out when your order will ship.


We accept returns of products in original, like-new condition within 45 days after an order is received. After receipt of return, the amount of purchase price will be credited within 5 business days. Return and original shipping charges are not refunded. See our Returns policy.

Frequently Asked Questions

What is the difference between SPT-1 and SPT-2?  The answer to a common question

How do I light my 20-foot tree? Materials list and the process

What is the difference between C7 and C9 bulbs? Compare the two

How many lights do I need for an outdoor tree?  An article to help answer this question.


Customer Reviews

Based on 16 reviews
CHELSEA M. (Edmond, OK)

My husband and I are complete newbies at installing Christmas lights and this spool made it easy to cut our lights to the perfect length for our house. Shipment was VERY fast. Excited for this upcoming Holiday season!

Richard V. (Sheridan, WY)
2021 Xmas Light Replacement

After thinking about it for 20 years, we made the commitment to replace the light strings on our house with customized C9 LED (9-inch spacing) and C7 LED (12-inch spacing) strings. We have the C9 strings cut and installed. They look fabulous. We have the C7 strings for around windows and doors cut but ran out of Gilbert plugs(ordered more this morning). We are very pleased with the quality of the light bulbs, wiring(went with SPT-2 and am impressed with the quality - well worth the extra cost) and hardware. We also decided to add the rubber o-rings for rain and snow in Wyoming - glad we did. Ordering and receiving the lights, cords and accessories with Christmas Light Source has been seamless and timely. We went with the Gilbert plugs including the inline plugs and have greatly reduced the number of extension cords. We would highly recommend Christmas Light Source. Will send photos when we are finished. We wish everyone a Very Merry Christmas.

Chris L. (San Jose, CA)
Cheaply made, but adequate

I'm not sorry I bought these, but I am disappointed in the quality. The plastic is incredibly thin and it's so easy to cross thread bulbs that it takes twice as long to screw each of the 600 of them in. I don't understand why year after year, products have to suck more and more... this C9 Spool 500' 9" Spacing SPT-1, White Wire is similar to products I've been buying for 15 years and I really wonder how long it will last. I can easily bend, crease, and crush each outlet in my thumb / finger.

Best Spool on the Market!

This spool is just what I needed. The 9 inch spacing is perfect for roof lines. The large spool allows me to have multiple lighting configurations to change to each year.

Work perfect

Works as advertised. Made a great display with minimal electrical knowledge

Nolan S.
Great Product

Everything arrived quickly so we could get our house decorated. Good quality products and great customer service.

works great

only way to go if you a lot of areas to cover on your display. order the wire in bulk and roll out what you need and terminate the ends. now you have the exact fit every year.

Perfect C9 bulk wire -9" Spacing

This 9" C9 bulk wire spacing turned out perfect with Red, Red, White alternating bulbs. I was concerned 12" was too large of spacing and am glad I went with the 9" although you need to buy more bulbs. I also was considering SPT2 but bigger lines get heavy on tall setups, something to think about. Thanks CLS!


I bought this for the entire front of my house and windows. It is very convenient to have these on a large spool and easy to cut to the correct length. A little tedious to have to screw in each individual bulb, but well worth not having them break during installation.

Mark C.
Love it!

Love this product! Works great! Only negative is that they didn't come with instructions on how to install the male and female plugs. Found helpful video on youtube to complete that step.

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Shipping Policy

We are currently shipping Monday through Friday with most orders placed before 2 pm CST shipped the same day. Other orders should ship the next business day.  

We aim to ship your order as soon as possible, this means we cannot cancel or modify your order once completed. If you have ordered incorrectly, you can return any uninstalled items that have been shipped to you. See our Shipping, Warranty, and Returns page for more information.

To Prevent Delays

Please double-check the address. Include a correct phone number to be used only if there is an issue with the order.  We do not ship to PO Boxes. Orders with PO Box addressing will be delayed while the customer is contacted and the address is corrected.

To prevent delays: Confirm the wire color of all items. Confirm that bulbs and cords match (for example, C7 with C7, C9 with C9, E12 bulb with E12 cord). Confirm SPT rating of cords and plugs match.

Delivery Timeframe Notices Regarding Air Orders (Excluding Holidays)

Orders placed via ground service should arrive in 1-5 business days depending on your zip code. This estimate does not include weekends or major Holidays.  

2-Day air orders shipped on Thursday do not arrive Saturday but should arrive the following Monday. Next-Day orders shipped on Friday do not arrive Saturday but should arrive the following Monday. No orders are delivered on the weekend and the weekend does not count as days in transit.

Due to these unprecedented times and high shipping volumes, UPS and FedEx do not guarantee the day and time of any method of shipping, including 2-Day and Next Day Air Service.

To ensure prompt shipping verify that your order is correct. Please do the following checks:

1. Confirm bulb bases and cord sockets match. 
2. Confirm 18 AWG wire SPT rating matches the SPT rating of plugs.
3. For bulk C7/C9 bulbs and cords orders, don't forget gilbert plugs, if required.
4. Double-check the wire color on all strings lights.